Thermotrace Self-Regulating Tracer – STF

Thermo Trace self-regulating cables-STF are a reliable solution for process temperature maintenance on process pipelines, vessels, tanks, equipment, and more. These cables are designed to adjust their heat output based on the surrounding temperature, ensuring that the desired temperature is maintained for optimal operation. Thermo Trace self regulating cables can be used for process temperature maintenance on process pipelines, vessels, tanks, equipments etc.
With advanced insulation options like Fluoropolymer,these cables offer excellent thermal performance and can withstand extreme temperatures and harsh environments. They are easy to install and require minimal maintenance, making them a cost-effective choice for businesses. Thermo Trace self-regulating cables-STF provide efficient and dependable performance, ensuring the smooth operation of critical systems in various high-temperature applications.

Operating Principle

Selftrace derives its self-regulating characteristic from the inherent properties of the semi-conductive core material.

As the core material temperature increases, the number of conductive paths in the core material decreases, thus decreasing the heat output. As the temperature decreases, the number of conductive paths increases, causing the heat output to increase. This occurs at every point along the cable’s length, adjusting the power output to the varying conditions. As the cable self-regulates its heat output, it limits the maximum sheath temperature, thus making it burn-out proof.

Technical Data Sheet

Features

Compliance Standards: EN 60079 – 0, IS/ IEC / EN 60079 – 30 – 1 & EN 60079 – 31
Approvals Tested by Central Institute of Mining and Fuel Research (CSIR-CIMFR), Dhanbad and approved by Petroleum and Explosives Safety Organization ( PESO), Nagpur, India for Zone II , TI (ATEX) for Zone I / Division II & EAC for use in hazardous area applications
Safety As the Cable self regulates its heat output, its limit the maximum sheath temperature, thus making it burnout proof
Cost-effective Controlled and self-regulating type provides heat when required, resulting in optimal heat utilization and save on energy cost.

Specifications

Catalogue Reference STF10 STF15 STF20 STF25 STF33
Heating Power W/m (230V AC) at 10oC 10 15 20 25 33
Voltage Supply 230/240 VAC, 50/60 Hz, 110/120VAC on request
Max. Operating Temperature 650C
Max. Exposure Temperature 850C
Min. Installation Temperature – 650C
Minimum Bending Radius 25 mm

#Thermopads reserves the right to modify the specifications in line with future improvements, updated standards or updated certifications.

STF Power Output Characteristics

Circuit Breaker Selection and Maximum Circuit Lengths

Catalog Number Output at 10° C, 230V Maximum Circuit Length Circuit Breaker Size Maximum Maintenance Temperature (°C) Maximum Exposure Temperature(°C)
STF 10 10 W/m 205 16A 65°C 85°C
STF 15 15 W/m 145 16A 65°C 85°C
162 20A 65°C 85°C
STF 20 20 W/m 116 16A 65°C 85°C
140 20A 65°C 85°C
STF 25 25 W/m 88 16A 65°C 85°C
117 20A 65°C 85°C
120 25A 65°C 85°C
126 30A 65°C 85°C
STF 33 33 W/m 70 16A 65°C 85°C
90 20A 65°C 85°C
99 25A 65°C 85°C
108 30A 65°C 85°C

Range

TYPE Nominal output Dimensions approx.
STF-10-AZ 10W/m @ 10⁰C 6.50 x 12.00 mm
STF-10-BZ 10W/m @ 10⁰C 6.50 x 11.20 mm
STF-10-BF 10W/m @ 10⁰C 5.50 x 10.20 mm
STF-15-AZ 15W/m @ 10⁰C 6.50 x 12.00 mm
STF-15-BZ 15W/m @ 10⁰C 6.50 x 11.20 mm
STF-15-BF 15W/m @ 10⁰C 5.50 x 10.20 mm
STF-20-AZ 20W/m @ 10⁰C 6.50 x 12.00 mm
STF-20-BZ 20W/m @ 10⁰C 6.50 x 11.20 mm
STF-20-BF 20W/m @ 10⁰C 5.50 x 10.20 mm
STF-25-AZ 25W/m @ 10⁰C 6.50 x 12.00 mm
STF-25-BZ 25W/m @ 10⁰C 6.50 x 11.20 mm
STF-25-BF 25W/m @ 10⁰C 5.50 x 10.20 mm
STF-33-AZ 33W/m @ 10⁰C 6.50 x 12.00 mm
STF-33-BZ 33W/m @ 10⁰C 6.50 x 11.20 mm
STF-33-BF 33W/m @ 10⁰C 5.50 x 10.20 mm
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